I have to import patch from one environment to another having process model which is using database tables.
In the source environment, Column name in table is 'empid' while in destination environment, it is 'empId' with capital 'I'. Will it cause error which importing patch in target environment.
Also, In source environment, column datatype is 'varchar(50)' while in destination environment, it is 'varchar(255). Will it cause error in patch import ?
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As a principle you should ensure source and target environments have identical data models (names,types and sizes), and that these changes should be applied BEFORE a patch/deployment of Appian objects is performed. This way the issues you're raising will not be issues.